冯云桑,刘少光,陈成武,吴进明,徐玉松

• 1:江苏科技大学材料科学与工程学院
• 2:浙江大学材料系
• 3:上海瀚昱环保材料有限公司

摘要(Abstract)：

采用挤出成型法制备出一系列MnOx/TiO2负载型催化剂,在393 K和氨气为还原剂的条件下进行SCR反应,得出MnOx含量为20%时脱硝效率最佳。SEM观察发现催化剂表面形成纳米级"牵牛花"物体,为含锰的氧化物。分别添加6%的Co和Ce氧化物后,脱硝效率达到最高。对6%Ce-6%Co-20%MnOx/TiO2进行XRD,XPS,SEM和BET表征,发现其有更多的Mn2O3相转化成MnO2,TiO2的结晶度降低,CeOx的加入提高了催化剂储存能力,化学吸附氧浓度增加,催化活性提高。从Co2p XPS图中发现新鲜催化剂中Co元素以CoTiOx形式存在,经过SCR反应后变为CoOx。

关键词(KeyWords)： 低温脱硝;SCR催化剂;MnOx/TiO2;Co-Ce-MnOx/TiO2

Abstract:

Keywords:

基金项目(Foundation): 中国国家科技部创新基金(09C26213301197)

作者(Author): 冯云桑,刘少光,陈成武,吴进明,徐玉松

DOI: 10.13289/j.issn.1009-6264.2014.06.005

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